Drilling-machine.



No. 659,704. i Patented 00L I6, |900. J. B. SOLOMON.

vDRILLINGMACHINE.

(Application led May 8, 1897. Renewed Aug. 17, 1900.)

(No Model.)

Ii 11 H III llllllllllllll WITNES S:

J3 l 79 n l ENTOR ATTORNEY mi .wams Farin; co, Mofo-LX1: msnm-mon, a. c.

"1L Nr'rnn STATES PATENT Fries.

JESSE B. SOLOMON, OF JEFFERSON, MADISON COUNTY, OHIO, ASSIGNOR OF ONE-HALF TO A. O. MILLIKEN AND T. O. GREGG, OF SAME PLACE.

Di-lLLING-VIACHINE.v

SPECTFICATION forming part of Letters Eatent No. 659,704, dated October 16, 1900.

Application filed May 6, 1897. Renewed August 17, 1900. Serial No. 27,231. KNO model.)

To @ZZ whom t may concern: erably of greater length than the arms 5. Be it known that I, JESSE B. SOLOMON, a Upon the upper side of each of the frames 5 citizen of the United States, residing at West and 6 is supported a bearing-block 7, and Jefferson, in the county of Madison and State upon each of said bearing-blocks is arranged 5 5 5 of Ohio, have invented a certain new and a boxing 8. Journaled in these boxings 8 and useful Improvement in Drilling-Machines, of extending therethrough are the ends of a which the following is a specification. horizontal orsubstantially-horizontal shaft 9.

My invention relates to the improvement On its outer end said shaft 9 carries a comof drilling-machines; and the objects of my paratively large sprocket-wheel 10. 6o ro invention are to provide a drilling-machine 11 represents a horizontal frame-bar which of improved construction and arrangement extends centrally beneath the under sides of of parts, to so construct said machine as to the upper portions of the frames 5 and 6,1and adapt the same for rapid and accurate drillfrom this bar 11 depends a hanger-frame l2, ing of holes through the webs of railwaywhich terminates inatransverse tubular and 15 rails and similar metal bodies, to provide iminternally-threaded portion 13.

proved means of adjustment, and to produce 14 represents a tubular feed-screw which other improvements in details of construcpasses through and engages with the internal tion, which will be more fully pointed out threads of the tubular frame-arm 13. This hereinafter. These objects I accomplish in tubular screw 14 has extending loosely there- 7o zo the manner illustrated in the accompanying through a shaft l5, which is provided on the drawings, in whichouter side of one end of said screw with a Figure lis an end Viewof lnyimproved ma-v shoulder portion 16, which is adapted to chine. Fig. 2 is a side elevation of the same, abut against the end of said screw. On the showing the machine in position for drilling outer side of the screw end last referred z5 through the web of a T-rail. Fig. 3 is a secto said shaft 15 is provided with a longituditional View on line :c a; of Fig. 2; and Fig. 4 nal keyWay 17, which is adapted to receive is a central vertical section of the feed-screw the projecting key Vor feather of a similar .11 and adjoining parts, taken on line y y of sprocket-wheel 18,which is mounted thereon.

Fig. 1. The opposite and outwardly-projecting end 8o 3o Similar numerals refer to similar parts portion of the shaft 15 extends within the throughout the several views. rear portion of a sleeve 19, said sleeve abut- In the construction of my improved drillting against the end of a screwr 14 and being ing-machine I employ two parallel base-bars rigidly connected with the shaft 15 by means 1, each of which terminates in its outer or of a set-screw 20. The outer end portion of 35 forward end in a yoke or hook 2, which is the sleeve 19 is adapted to receive the shank substantially of the inverted- U shape shown. of a suitable drill 21, which is rigidly held These yokes or hook-shaped bar ends 2 are therein by means of a set-screw 22. adapted, as indicated in the drawings, to em- By the means above described it will be brace opposite sides of the head or tread of a seen that the drill 21 will be thus supported 9o 4o railway-rail 3. Through the upper side of between the hook portion 2 of the bars 1 and each of the hooks 2 passes a set-screw 4, in position for entering the web of the rail 3, which by being turned in contact with the the head of which is embraced by said hooks. tread of the rail 3is adapted, for the purpose Upon the outer end of the screw 14 is sehereinafter shown, to elevate said hooks and cured a hand-wheel 23. Through the outer 45 result in the bars 1 assuming the inclined and normally lower portions of the bars lare positions shown. From the forward end porformed vertical screw-holes, through which tions of the base-bars 1 extend upwardly the extend vertical set-screws 24, the lower ends vertical arms of a bearing-frame 5, while from of the latter being adapted to bear upon the the rear end portions of said bars extend upupper surfaces of railway-ties or other bodies ico 5o wardly similar vertical arms of a bearingupon which th'e bars 1 are supported.

frame 6, the arms of the frame 6 being pref- As indicated at 25, the outer end of the shaft 15 is journaled in a suitable bearingarm which extends from one of the framebars 1.

26 represents an endless sprocket-chain which passes over and connects the sprocketwheels 10 and 18. The sprocket-Wheel lOis, as indicated at 27, provided with a suitable outwardly-extending handle.

In order to utilize my invention for the purpose of drilling holes through a track-rail 3, the above-described machine is so placed as to cause the rail head or tread to be embraced by the bar-hooks 2 in the manner indicated in Fig. 2 of the drawings. In case it is found that the drill is not then supported in the proper horizontal position it is evident Jthat the frame Which supports the feed screw and drill may be readily adjusted to the desired position by turning the set-screws 24.l The point at which the drill enters the Web of the rail may be regulated by turning the set-screws 4. The drill being thus supported in the proper position and opposite the proper point to be drilled, rotary motion is communicated tothe Wheel 10, which through the chain 26 operates to impart rot-ary motion to the small sprocket-Wheel 18 and to the shaft 15, upon which said sprocket is mounted. In this manner the desired rotary drilling motion is communicated to the drill 21.

In order to impart the desired forward feed to the drill during its rotary movement, it is obvious that the hand-Wheel 23 may be turned, which Will result in the feed-screw 14 moving forward and carrying the shaft 15, sleeve 19, and set-screw 21 With it. In this longitudinal movement of the feed-screw and its connecting parts it is obvious that the position of that portion of the shaft upon which the sprocket Wheel 18 is mounted Will move through the hub of said sprocket-Wheel.

If desired, it is evident that gear-Wheels which mesh one with the other might be substituted for the Wheels 10 and 1S; but the employment of the sprocket-Wheels and chain connection herein described admits of the large Wheel 10 being driven to the right to produce the proper drilling rotation of the drill. l

From the construction and operation which I have described it will be seen that a simple, eective, and reliable drilling-machine is produced which may be readily placed in position for drilling holes through track-rail webs or other metallic bodies and which by the expenditure of a comparatively smallamount of power may be made to do its work rapidly and accurately. It will also be observed that the construction of my improved drilling-machine is such as to admit of its production at a reasonable cost of manufacture and without complication.

Having now fully described my invention, what I claim, and desire to secure by Letters Patent, isi,

In a drilling-machine the combination with the parallel bars 1 having hook-shaped terminations 2,set-screws 4 passing therethrough as described, set-screws: 24 passing through said bars as described, frames 5 and 6 rising from said bars, a hanger-frame depending from said frames, said hanger-frame having an internally-threaded arm 13, a shaft 9 journaled in said frames 5 and 6, and a sprocket- Wheel on one end of said shaft, of a tubular feed-screw 14 passing throught and engaging with the threads of the frame-arm 13, a handwheel on said screw,a shaft 15 passing through said screw, a sleeve connectingthe outer end of said screw with a drill a smaller sprocketwheel movably mounted on saidishaft 15 and an endless chain connecting said sprocket- Wheels 10 and 1S, substantially as and for the purpose specified. ,l

JESSE B. SOLOMON. In presence ofl JOHN J. CARK,

E. T. TEMPLE. 

